
Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

LinkedIn
Armor Games
Wee Puzzles
Wordle
Play Zip Game online for free! A fun puzzle game from LinkedIn. Connect numbers in sequence. No download required.

Which is more popular?
Based on our record, Cert Decoder seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | certdecoder.com | zipgame.me |
| Pricing | — | |
| Platforms | ||
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.
ZipGame is a browser-based brain trainer where you connect numbers in sequence to fill the entire grid. I built this for people who want a quick mental workout without the bloat of modern mobile games—no downloads, no accounts, and absolutely no ads. It features multiple difficulty levels and a...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Cert Decoder and ZipGame.me.
Cert Decoder's answer
I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.
ZipGame.me's answer:
The project started from a personal need. I loved the "Zip" style puzzles but found existing web versions to be either poorly optimized for mobile or hidden behind aggressive monetization. I decided to build a version I would want to use every day: a fast, clean, and reliable platform that honors the simplicity of the game’s original logic.
Cert Decoder's answer
certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server
ZipGame.me's answer:
To ensure the fastest possible performance, ZipGame.me is built using a lightweight web stack:
Frontend: Vanilla JavaScript and HTML5 Canvas for smooth, low-latency rendering.
Styling: Modern CSS3 with a focus on responsive design and dark mode support.
Data: LocalStorage for saving personal best times, ensuring all user data stays 100% on their own device.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
ZipGame.me's answer:
Our primary audience consists of "micro-break" enthusiasts—people looking for a 2-minute mental reset during their day. This includes software developers, office professionals, and puzzle lovers who enjoy spatial reasoning and logic challenges but prefer lightweight web tools over heavy mobile games.
Cert Decoder's answer
Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.
ZipGame.me's answer:
Zero Friction: No apps to download, no accounts to create, and absolutely no ads.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
ZipGame.me's answer:
ZipGame.me's answer:
ZipGame.me is built on the philosophy of "Pure Logic, Zero Noise." While many puzzle apps today are cluttered with heavy animations, complex leveling systems, and intrusive ads, we stripped everything back. It offers a minimalist, high-performance web experience that loads in under a second, focusing entirely on the meditative flow of path-finding.
Share your experience with using Cert Decoder and ZipGame.me. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago
Tracking ZipGame.me since Feb 2026.